You can edit campaigns until you click the button to start them. Once they are started, editing is locked. However - you can simply pause the campaign in order to edit it again.
To pause a campaign, from your Campaigns dashboard:
click the three dots on the right next to the campaign you wish to pause
click "Pause campaign"
What happens:
Skyp stops sending emails.
Automations that add contacts will continue to add contacts.
The second point means that if you have integrations such as the Syft Data integration attached to that campaign, contacts will still be added even when it is paused.
You are able to edit, change settings, and do whatever you like to the campaign at this point.
What happens when you restart it:
New contacts will receive emails in the order that they should get them (For example, if you added a new contact, it will receive the 1st email in their sequence)
Existing contacts will receive the correct email in their seqeunce (for example, if Betty already received 3 emails she will get the 4th; if Joe had received 5 emails he will get email 6 next).
Email sending is throttled as you would expect, so if the campaign is large and has a lot of contacts (or you added a lot) with a big backlog of emails, it may take more than a day to get through them all.
If you have any questions feel free to drop us a chat in the chat widget and we'll get back to you!